日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

City with worst air pollution vows change

Updated: 2011-12-30 13:34

(Xinhua)

  Comments() Print Mail Large Medium  Small

LANZHOU - The top official of a northwest China province has pledged to clean up the sky over the provincial capital after it was named China's city with the worst air pollution by a World Health Organization (WHO) survey published in September.

Lanzhou, a heavy industry city situated in the Yellow River valley in the country's arid northwest, ranked the worst among Chinese cities in the WHO's survey tracking air pollution by the levels of airborne particles smaller than 10 micrometers (PM10) measured in 1,086 cities in the world, mostly between 2008-2009.

Lanzhou's annual PM10 average was 150 micrograms per cubic meter, dramatically higher than the WHO-recommended upper limit of 20 micrograms per cubic meter. The Geneva-based organization says PM10s can cause heart disease, lung cancer, asthma, and acute lower respiratory infections.

In winter, the most polluted season, Lanzhou is typically shrouded in a haze that can block sunlight to the extent that the day is sometimes as dark as the night. Residents generally avoid opening windows, otherwise their furniture will soon be coated in thick dust.

Wang Sanyun, the newly-appointed top official of Gansu province, said that his government "is resolved to win the tough and arduous battle against air pollution."

Wang, secretary of the Gansu provincial committee of the Communist Party of China, told provincial officials Thursday that the government will go after factories releasing pollutants, promote clean energy in public transport, build subways and light rails to reduce car exhaust emissions, and replace coal with natural gas to sustain the city's winter heating system.

Due to an urbanization rush, most cities in China face tremendous challenges in keeping air pollution in check. Only one in the 31 Chinese cities included in the WHO survey had PM10 levels under 50 micrograms per cubic meter, while the vast majority of European and North American cities reported PM10 levels under 50 micrograms per cubic meter.

Many Chinese cities have been periodically enveloped in smog this winter, but the official air quality index typically classifies pollution as "light," deepening public frustration over the quality of air people breathe every day.

Minister of Environmental Protection Zhou Shengxian has urged a prompt overhaul of the current air quality monitoring standard to factor PM2.5 - the measure of microscopic airborne particles smaller than 2.5 micrometers - as well as measures of ozone and carbon monoxide into its pollution monitoring system.

主站蜘蛛池模板: 黄色一及毛片 | 夜夜骑天天干 | 久久天堂视频 | 日本少妇激情视频 | 亚洲色网址 | 成人精品一区二区三区四区 | av手机天堂 | 国产精品高潮视频 | 69中文字幕 | 天堂视频免费在线观看 | 中文av片| 国产精品亚洲成在人线 | 欧美国产日韩视频 | 91精品国产一区二区三区蜜臀 | 国产第8页| 成人女同av免费观看 | 91大神福利视频 | 一级片视频免费看 | 成人国产精品免费观看 | 国产高清成人久久 | 日本黄网站| aaa成人| 国产福利影视 | 亚色成人 | 激情九九 | 亚洲综合精品 | 久久乐av| 国产精品成人自拍 | 色婷婷久久综合久色 | 成人网在线免费观看 | 自拍偷拍网址 | 亚洲国产精品二区 | 免费毛片视频 | 亚洲免费在线观看视频 | 少妇高潮露脸国语对白 | 日日夜夜一区二区 | 中文一区在线观看 | 精品美女在线视频 | 中文字幕乱码一区二区 | 99香蕉视频 | 日本一二三区在线视频 |